Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 82, NWS Melbourne, FL

June 18, 2011Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 18, 2011, 6:52 PM EDT for Brevard County, Florida. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 18, 2011, 6:52 PM EDT (22:52 UTC)
Expired: Jun 18, 2011, 7:45 PM EDT
In force: 53 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 60 km from the middle of the area, began a volume at 22:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.9 hours before the alert went out and 31 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 122 J/kg
Mixed-layer CIN: -222 J/kg
Mixed-layer LCL: 1401 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

572 
WUUS52 KMLB 182252
SVRMLB
FLC009-182345-
/O.NEW.KMLB.SV.W.0082.110618T2252Z-110618T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
652 PM EDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BREVARD COUNTY IN FLORIDA

* UNTIL 745 PM EDT.

* AT 649 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  SCOTTSMOOR...AND MOVING SOUTHEAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... 
  MIMS...HAULOVER CANAL...TITUSVILLE...MERRITT ISLAND WILDLIFE       
  REFUGE...PLAYALINDA BEACH AND KENNEDY SPACE CENTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN
HOUR AND OR LARGE DESTRUCTIVE HAIL. FREQUENT TO EXCESSIVE LIGHTNING
AND VERY HEAVY RAIN WILL ALSO BE POSSIBLE. IF THE STORM APPROACHES
YOU...SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR. KEEP
AWAY FROM WINDOWS.

NATIONAL WEATHER SERVICE METEOROLOGISTS ALSO DETECTED SOME WEAK
ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A SMALL INTERIOR
ROOM.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 2858 8060 2849 8064 2851 8073 2866 8080
      2854 8079 2859 8097 2878 8097 2878 8096
      2878 8084 2865 8082 2871 8075 2878 8083
      2879 8078 2866 8067 2868 8066 2878 8073
      2878 8072 2845 8052 2845 8053
TIME...MOT...LOC 2250Z 304DEG 20KT 2877 8087

$$


KELLY

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 8:15 PM EDT	Severe Thunderstorm Warning	MLB	Seminole, Volusia	60 min
Jun 17, 8:45 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole, Volusia	2 hr
Jun 17, 9:11 PM EDT	Special Weather Statement	MLB	Seminole	49 min
Jun 18, 3:45 PM EDT	Special Weather Statement	MLB	Flagler	45 min
Jun 18, 4:22 PM EDT	Special Weather Statement	MLB	Lake	38 min
Jun 18, 4:49 PM EDT	Special Weather Statement	MLB	Volusia	41 min
Jun 18, 4:51 PM EDT	Special Marine Warning	MLB		114 min
Jun 18, 4:51 PM EDT	Special Weather Statement	MLB	Indian River	39 min
Jun 18, 4:53 PM EDT	Special Weather Statement	MLB	Osceola	82 min
Jun 18, 5:01 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	44 min
Jun 18, 5:02 PM EDT	Special Weather Statement	MLB	Volusia	43 min
Jun 18, 5:08 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	37 min
Jun 18, 5:10 PM EDT	Tornado Warning	MLB	Volusia	46 min
Jun 18, 5:18 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Indian River	57 min
Jun 18, 5:39 PM EDT	Tornado Warning	MLB	Volusia	51 min
Jun 18, 5:56 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	64 min
Jun 18, 6:00 PM EDT	Special Marine Warning	MLB		2 hr
Jun 18, 6:13 PM EDT	Tornado Warning	MLB	Seminole, Volusia	47 min
Jun 18, 6:18 PM EDT	Special Weather Statement	MLB	Orange, Seminole	117 min
Jun 18, 6:18 PM EDT	Severe Thunderstorm Warning	MLB	Seminole, Volusia	57 min
Jun 18, 6:43 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola, Seminole	62 min
Jun 18, 7:10 PM EDT	Tornado Warning	MLB	Orange, Osceola	50 min
Jun 18, 7:22 PM EDT	Tornado Warning	MLB	Orange, Seminole	38 min
Jun 18, 7:29 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange, Osceola	46 min
Jun 18, 7:53 PM EDT	Areal Flood Advisory	MLB	Brevard, Orange, Seminole	112 min
Jun 18, 7:54 PM EDT	Special Marine Warning	MLB		111 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.